Salus FC600 User manual
1 Fan Coil FC600 Instruction Manual
Instructions Manual
Fan Coil thermostat
Model: FC600
2 Fan Coil FC600 Instruction Manual
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3 Fan Coil FC600 Instruction Manual
Table of contents
1.Introduction ....................................................................................................................................................................5
1.1 Product Compliance ................................................................................................................................................5
1.2 Safety information......................................................................................................................................................5
1.3 Product Overview.......................................................................................................................................................5
2.Operation Manual (Oine Mode)..................................................................................................................6
2.1 Principles of Operation............................................................................................................................................6
2.2 Key Functions................................................................................................................................................................6
2.3 LCD Icon Description................................................................................................................................................7
2.4 Power Up..........................................................................................................................................................................9
2.5 Temperature Setpoint ..............................................................................................................................................9
2.6 Fan control.................................................................................................................................................................... 10
2.7 Operation Mode Selection................................................................................................................................. 11
2.8 Other Mode Button Functions ....................................................................................................................... 14
2.8.1 Setting date and time ......................................................................................................................... 15
2.8.2 Setting Schedules.................................................................................................................................. 16
2.8.3 Offset Function........................................................................................................................................ 19
2.9 Other Functions........................................................................................................................................................ 19
2.9.1 Frost Protection....................................................................................................................................... 19
2.9.2 Key Lock Function ................................................................................................................................. 20
2.9.3 Service Filter Reminder....................................................................................................................... 20
2.9.4 Error Codes20
2.10 STANDBY Mode...................................................................................................................................................... 21
3. Operation Manual (Online Mode).............................................................................................................. 22
3.1 Quick Overview......................................................................................................................................................... 22
3.2 App screen Icon Description ............................................................................................................................ 23
3.3 Device name change............................................................................................................................................. 24
3.4 Temperature Setpoint ........................................................................................................................................... 24
3.4 Heat/Cool selection................................................................................................................................................ 25
3.5 Work Status .................................................................................................................................................................. 26
3.5.1 Follow Schedule ..................................................................................................................................... 26
3.5.2 Permanent hold...................................................................................................................................... 26
3.5.3 Eco Mode..27
3.5. 4 STANDBY Mode .................................................................................................................................... 28
3.6 Setting a schedule for the thermostat........................................................................................................ 29
3. 7 Fan Control.................................................................................................................................................................. 31
3.8 Key lock function...................................................................................................................................................... 31
3.9 Occupancy Sensor .................................................................................................................................................. 32
3.10 Window Association Function ...................................................................................................................... 32
3.11 Identification Function....................................................................................................................................... 33
3. 12 Pin/Unpin thermostat to the dashboard............................................................................................... 33
3.13 Service Settings...................................................................................................................................................... 34
3.14 Using/Adding OneTouch ................................................................................................................................. 35
4. Installer Manual ...................................................................................................................................................... 36
4.1 Box Contents............................................................................................................................................................... 36
4.2 Idea diagrams............................................................................................................................................................. 37
4.3 Wiring options............................................................................................................................................................ 40
4. 4 Terminals explanation.......................................................................................................................................... 41
4.5 Wall Mounting............................................................................................................................................................ 43
4.6 First Power Up ............................................................................................................................................................ 45
4 Fan Coil FC600 Instruction Manual
4.6.1 Offline Mode (with no Internet connection)........................................................................ 45
4.6.2 Online Mode (with Internet connection) ............................................................................... 46
4.7.1 In offline Mode (with no Internet connection)................................................................... 50
4.7.2 Switching from non-programmable to programmable thermostat..................... 50
4.7 Installer Parameters ............................................................................................................................................... 50
4.7.3 In online Mode (via App)................................................................................................................... 51
4.8 Full Parameter List.................................................................................................................................................... 51
4.9 Switching from offline to online mode...................................................................................................... 59
4.10 Reset Function ........................................................................................................................................................ 61
4.11 Cleaning and Maintenance ........................................................................................................................... 62
4.12 Technical Info........................................................................................................................................................... 62
4.13 Warranty...................................................................................................................................................................... 63
5 Fan Coil FC600 Instruction Manual
Use in accordance with the regulations. Indoor use only. Keep your equipment completely dry. Disconnect your equipment before cleaning it
with a dry towel.
Introduction
This product complies with the essential requirements and other relevant provisions of Directives 2014/30/EU, 2014/35/EU, 2014/53/EU and
2011/65/EU. The full text of the EU Declaration of Conformity is available at the following Internet address: www.saluslegal.com.
The Fan Coil thermostat (FC600) is a complex device that can help you control your room temperature and fan
speed in a large number of configurations. It can be connected to a 2 or 4 pipe system and can be associated
with multiple sensors (occupancy sensors, window sensors, pipe sensors), increasing by that the quality and
speed of the temperature management in your home, office, hotel etc. It can be used with a various number of
different devices such as trench heaters, wall water heaters, electrical heaters and many more.
The complex structure of the device lets you to set independent schedules on a weekly or daily basis, depending
on your preferences and needs. It has multiple work configuration possibilities and can be controlled in both
off-line and on-line modes. Besides that, it can work in Eco Mode, ensuring a economy of resources and money.
Feature List
• Control of 2/4 pipe fan coils
• Multiple configurations
• Large LCD
• Maintain room temperature via built in temperature sensor or external room temperature/return air
temperature sensor
• Programming options: 5+2 (5 days same+2days same); Individual day every week; All 7 days same
• ECO mode
• Fan speed Hi/Mi/Lo control ( automatic or manual )
• Advanced fan control functions ( fan start/stop, delay, fan continuously running in manual mode, or
depending on heating/cooling demand)
• Auto Frost protection
• Configurable inputs (occupancy sensor or temperature)
• Installer settings
• Span or TPI temperature control algorithm
• Local or remote control by SmartHome App
• Wireless software update by UG600
The Fan Coil is compatible with the Smart Home App and can communicate with other Smart Home devices
like the window/door sensors, smart plugs, smart buttons.You can also use the Fan Coil without the App. It can
operate as a stand alone device.
1.Introduction
1.1 Product Compliance
1.2 Safety information
1.3 Product Overview
6 Fan Coil FC600 Instruction Manual
Introduction
2.Operation Manual (Oine Mode)
The FC600 thermostat can control 2 vales (in 2 pipes the V1 input controls heating and cooling, in 4 pipes V1
controls heating and V2 controls cooling). FC600 can also control the FAN speed in 3 levels: low, medium or
high, in order to maintain the room temperature.
Digital
Programmable
Short press Long press(2 sec)
Increase
FunctionKey
Decrease
Mode
button
Fan Speed Low, Medium, High, Auto, O
Short press: Conrm function
Long press (3 sec): Activate/deactivate STANDBY mode.
Heat/Cool/Eco
selection Oset, Time
Permanent override
AUTO
Heat/Cool/Eco
selection
Programming
schedule
Oset
Time&Date
Note:The function of the Mode button depends on the Fan Coil
conguration
2.2 Key Functions
2.1 Principles of Operation
7 Fan Coil FC600 Instruction Manual
1 2 3 4 5 6
13
1718 16 15 14
725
24
23
22
21
20
19
12
10
11
9
8
2.3 LCD Icon Description
1. Auto heat/cool selection
2. Schedule icon
3. Permanent/temporary override
4. Fan icon
5. Fan speed (low, medium, high, Auto, OFF)
6. Wireless communication icon
7. Glob icon
8. Temperature unit
9. Heating Mode ON
10. Cooling Mode ON
11. STANDBY mode
12. Occupancy/vacancy sensor
13. Lock function
14. AM/PM
15. Eco Mode
16. Day Indicator
17. Filter icon
18. Current time
19. Sensor indicators
20. Timer icon
21. Program number
22. S1/COM Sensor indicators
23. S2/COM Sensor indicators
24. Room/set point temperature
25. Set point temperature indicator
8 Fan Coil FC600 Instruction Manual
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1. Auto heat/cool selection
This icon is visible when the thermostat is running in auto heat/
cool changeover.
14. AM/PM
Appears when you have 12 hours clock format.
2. Schedule icon
This icon is visible when the thermostat is programmable and is
following the schedule.
15. Eco Mode
This icon is visible when the thermostat runs in Eco Mode.
3. Permanent/temporary override
This icon is visible always when the thermostat is digital (non-
programmable) or when permanent override is enabled. When
temporary override is enabled, the icon will appear next to the
schedule icon.
16. Current day of the program
The current day of the program is underlined.
4. Fan icon
This icon is animating in sequence when the fan is
running.
17. Clear lter reminder
This icon is visible when the filters have to be replaced.
5. Fan speed (low, medium, high, Auto, OFF)
This icon shows fan speed and status.
18. Current time
Time Display.
6. Wireless communication icon
This icon appears when the thermostat is connected
to the Universal Gateway.
19. Sensor indicators
This icon is visible when a sensor is connected to S1/Com or S2/
COM terminals.
7. Glob icon
This icon is appears when the thermostat is
connected to the Universal Gateway and App via
Internet.
20. Timer icon
Icon appears during programming schedules,
indicates start time for a program.
8. Temperature unit
⁰C or F
21. Program number
Shows the program number when thermostat
follows schedule.
9. Heating Mode ON
This icon indicates heating mode. Animating when
calling for heat.
22. S1/COM Sensor indicators
Shows a sensor is connected to the S1/COM
terminal.
10. Cooling Mode On
This icon indicates cooling mode. Animating when
calling for cooling.
23. S1/COM Sensor indicators
Shows a sensor is connected to the S2/COM
terminal.
11. STANDBY mode
This icon indicates the thermostat is in STANDBY
Mode or Frost Protection.
24. Room/set point temperature
Indicates current room temperature, setpoint
temperature etc.
12. Occupancy/vacancy sensor
Man in door when presence detected , empty
door when not.
25. Set point temperature indicator
Icon appears when a new setpoint temperature is
being set.
13. Lock function
This icon indicates the keys of the device are locked.
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low medium OFF
high
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9 Fan Coil FC600 Instruction Manual
After the Fan Coil (FC600) has been installed accordingly to your system (for the installation and different
systems description please refer to the Installer Section in chapter 4) it will go into STANDBY Mode. To start
using your FC600 and adjust room temperature, create schedules and operate the fan you will need to wake
it up. Simply press the button for 3 seconds. The icons on your screen will show up depending on your
settings. The time should be 12 AM. Note: Press any button to activate the LCD first!
MM
MM
Press arrows to check setpoint The current setpoint temperature
will start ashing
Setpoint temperature is the temperature you want to set or the temperature set by the program. Under your
home display, press or to view the set point temperature. When the program is running, after the
short press of the Up/Down arrows, the LCD will show the current program setpoint, with the Set icon.
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Press Up/Down to increase/
decrease setpoint
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Press OK to save and exit
Note: By default, if you are using the thermostat without the Internet, it will be non-programmable, meaning
that you cannot set programs. The thermostat can be switched to programmable mode by changing the d00
parameter from 0 to 1 in Installer Mode. Find more information in the Installer Section.
For non-programmable thermostat
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The thermostat will now return to home screen and it will follow new setpoint.
2.5 Temperature Setpoint
2.4 Power Up
3 sec
00:00
00:00
00:00
.
10 Fan Coil FC600 Instruction Manual
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Press arrows to check setpoint After 1 sec Set point will ash
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Press Up/Down to increase/
decrease setpoint
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Press OK to save and exit
For programmable thermostat
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The thermostat will now return to home screen and it will follow new setpoint.
It now operates in Temporary Override mode. Once the mode is activated,
the LCD will display the calendar and hand icons After entering
this mode, the thermostat will use this temporary override setpoint to control
room temperature until next Program start time. Then it goes backs from
Temporary Override to Program mode.
If press Mode Button during Temporary Override, it will get canceled and
the thermostat will enter previous mode.
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Note: If you are using the Mode Button, please make sure that thermostat is following the appropriate Heating
or Cooling mode (if both are available).
You can use the Fan Button to adjust the fan speed.
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Press to select fan speed
Animation Meaning
Fan is not active
When the fan is running, the fan icon is animated
Fan speed: Low, Medium, High
Fan speed on Auto / Off. When fan is Off all dots
and Auto icon disappears
By default, the fan is on only when the Fan Coil calls for heating or cooling.
Note: In program mode, the default fan mode is automatic. The fan mode can be changed to Manual by
pressing the Fan Button. The fan will not return to the auto mode until the next program time.
2.6 Fan control
00:00
00:00
.
00:00
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11 Fan Coil FC600 Instruction Manual
By shortly pressing the Mode Button on your Fan Coil, you
can access various modes depending on your settings. Please
find a list below with all the possible combinations for the short
press of the Mode Button in both 2 or 4 pipe configuration.
Depending on your configuration the thermostat can run in:
Cooling mode, Heating Mode, Eco Mode, Schedule Mode,
Permanent or Temporary Override, or a combination of these.
Find bellow a description of these modes.
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Note: The function of the Mode Button depends on the Fan Coil configuration.
Modes for non-programmable (digital) thermostat
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The Hand icon indicates that the thermostat is in permanent override(manual mode).
The snowflake icon indicates that the thermostat is in Cooling Mode. You can set a
temperature lower than the current temperature and the Fan Coil will maintain it until
you set a new setpoint.
If you have Manual Heat/Cool selection, these are the 4 possible combinations you can have by short
pressing the Mode Button:
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The Leaf icon indicates that the thermostat is in Eco Mode. The snowflake icon indicates
that the thermostat is in Cooling Mode. When in Eco Mode, the thermostat will use Eco
setpoint to control room temperature.You cannot change the temperature in Eco Mode.
WhenthermostatoperatesinEcoMode,youcannotsetanewtemperaturesetpointbypressingthe or .
After thermostat exists Eco Mode, it returns to the previous set mode.
The default set point temperature is 30°C for cooling mode and 15°C for heating mode. To change that, please
refer to settings in Installer Section.
Note: If you have the occupancy sensor, then the Eco Mode will be activated automatically when the set
up is complete. This is the default setting. You can choose from either ECO or STANDBY modes.
1.
2.
2.7 Operation Mode Selection
00
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12 Fan Coil FC600 Instruction Manual
The Hand icon indicates that the thermostat is in permanent override(manual
mode). The heat icon indicates that the thermostat is in Heating Mode. You can set a
temperature higher than the current temperature and the Fan Coil will maintain it until
you set a new setpoint.
3.
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4.
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The Leaf icon indicates that the thermostat is in Eco Mode. The heat icon indicates that
the thermostat is in Heating Mode. When in Eco Mode, the thermostat will use Eco
setpoint to control room temperature.You cannot change the temperature in Eco Mode.
WhenthermostatoperatesinEcoMode,youcannotsetanewtemperaturesetpointbypressingthe or .
After thermostat exists Eco Mode, it returns to the previous set mode.
The default set point temperature is 30°C for cooling mode and 15°C for heating mode. To change that, please
refer to settings in Installer Section.
Note: If you have the occupancy sensor, then the Eco Mode will be activated automatically when the
set up is complete. This is the default setting. You can choose from either ECO or STANDBY mode when
depending on the position of the keycard (in/out).
If your thermostat is set to Auto Heat/Cool selection, these are the 2 possible combinations you can have by
short pressing the Mode Button:
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The A Icon indicates that the thermostat is running in auto heat/cool changeover
mode. The hand icon shows Permanent Override Mode (manual). You can set a
setpoint temperature and the thermostat will follow it. The Heating/Cooling mode
will be selected automatically:
- using Heat / Cool changeover sensor connected to S1/COM (available in 2 pipe and
4 pipe application)
- using the pipe sensor connected to S1/COM (available in 2 pipe application only)
- using the "dead zone" (available in 4 pipe application only)
Eco Mode with auto heat/cool changeover. The temperature will be set using Eco
temperature setpoint. When in Eco Mode, the thermostat will use Eco set point to
control room temperature. You cannot change the temperature in Eco mode.
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1.
2.
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13 Fan Coil FC600 Instruction Manual
Modes for programmable thermostat
If you have Manual Heat/Cool selection, these are the 6 possible combinations you can have by short
pressing the Mode button:
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The calendar icon indicates that the thermostat is following the schedule.The snowflake
icon indicates that it is running in Cooling Mode.
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1.
2.
5.
3.
4.
6.
The Hand icon indicates that the thermostat is in permanent override (manual mode).
The snowflake icon indicates that the thermostat is in Cooling Mode. You can set a
temperature lower than the current temperature and the Fan Coil will maintain it until
you exist the permanent override or set a new setpoint.
The Leaf icon indicates that the thermostat is in Eco Mode. The snowflake icon indicates
that the thermostat is in Cooling Mode. When in Eco Mode, the thermostat will use Eco
setpoint to control room temperature.You cannot change the temperature in Eco Mode.
The Hand icon indicates that the thermostat is in permanent override (manual mode).
The heat icon indicates that the thermostat is in Heating Mode.You can set a temperature
higher than the current temperature and the Fan Coil will maintain it until you exit the
permanent override or set a new setpoint.
The Calendar icon indicates that the thermostat is following the schedule. The heat icon
indicates that it is running in Heating Mode.
The Leaf icon indicates that the thermostat is in Eco Mode. The snowflake icon indicates
that the thermostat is in Heating Mode. When in Eco Mode, the thermostat will use
Eco setpoint to control room temperature. You cannot change the temperature in Eco
Mode.
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14 Fan Coil FC600 Instruction Manual
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Schedule Auto Mode. The temperature will be set depending on your created schedules
and the thermostat will change between the Heating/Cooling modes automatically.
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If your thermostat is set to Auto Heat/Cool selection, these are the 3 possible combinations you can have by
short pressing the Mode Button:
1.
2.
3.
The A Icon indicated that the thermostat is running in auto heat/cool changeover mode.
The hand icon shows Permanent Override Mode (manual). You can set a temperature
depending on the auto heat/cool changeover setpoint temperature.
Eco Mode with auto heat/cool changeover. The temperature will be set using Eco
temperature setpoint. You cannot change the setpoint in Eco Mode.
By long pressing the Mode Button on your Fan Coil, you can
• Set Time and Date
• Create Schedules
• Access Offset Function
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Note: Setting the date and creating schedules is available only when the thermostat is
programmable (time and offset are available always). As default, the thermostat is configured as
digital (non-programmable) thermostat! If you would like to change the thermostat from digital
to programmable, you need to change d00 parameter from 0 to 1 (please see page 51).
2.8 Other Mode Button Functions
3sec
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00:00
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15 Fan Coil FC600 Instruction Manual
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PressMode Buttonfor3seconds. Press OK button to enter
hour setup.
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Using UP/DOWN arrow
enter hours value.
Press UP arrow 1 time.
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2.8.1 Setting date and time
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09:00
Press OK. Enter minutes value.
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09:00
Press OK.
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20 16
Select year. Press OK.
01 01
Using the arrows, select month.
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05 01
Select date. Press OK
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Afterdateandtimeareset,thermostat
will go to home screen.
After you have completed
time and date setup, you
can start setting up your
schedules and programs.
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05 01
Press OK.
Note: If your thermostat is non-programmable, it will jump step nr. 2 from below and will do directly
to step 3! Also, after step 6 it will exist to home screen. You cannot set the date on non-programmable
thermostats.
* if programmable only
* if programmable only * if programmable only
* if programmable only * if programmable only * if programmable only
09:00
Note: Press any button to turn on the LCD first!
3sec
00:00
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00:00
16 Fan Coil FC600 Instruction Manual
Make sure that your thermostat is programmable before starting to set schedules. When you will start setting
the schedules from your thermostat, a default program will be enabled.You can easily modify the initial settings,
according to your needs. Please see below a table with the default factory schedules. You can choose from:
• 5+2 (Mon-Fri + Sat-Sun)
• 1-7 (individual programs each day)
• all 7 - the same program for all 7 days of the week
DefaultProgram timeandsetpoints(forHeating,Coolingandmodeand Automodes) for2/4pipeconguration
Program
period Time
Cool mode set point Heat mode set point
Day 1 to 5
(or 1-7 or
individual)
Day 6 to 7
Day 1 to 5
(or 1-7 or
individual)
Day 6 to 7
1 6:00 24°C 24°C 21°C 21°C
2 8:00 28°C 26°C 18°C 21°C
3 16:00 24°C 24°C 21°C 21°C
4 18:00 28°C 24°C 21°C 21°C
5 22:00 24°C 26°C 18°C 18°C
6 - - - - -
Note: The next steps will depend on what
configuration you have. If you have manual
heat/cool changeover you will need to select
for which mode you want to set a schedule.
If you have Auto heat/cool changeover, the
device will skip steps 3-4.
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PressModebuttonfor3seconds Press UP arrow 1 time
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Press OK button on this step if you want to set a schedule for the Cooling
Mode only. If you would like to set a schedule for the Heating Mode only,
press the Up arrow once. After you have pressed OK, the Fan Coil will go
to step 5.
Press OK button on this step if you want to set a schedule for the Heating
Mode only. If you would like to set a schedule for the Cooling Mode only,
press the Up arrow once. After you have pressed OK, the Fan Coil will go
to step 5.
2.8.2 Setting Schedules
Selection the heating mode schedule or cooling mode schedule is available only when the thermostat is set
to work in both modes. If the thermostat is set to work heating mode or cooling mode only then the device
will skip steps 3-4, as only one schedule needs to be created. If both modes are available - 2 schedules need
to be created (one for heating, another for cooling).
• Note: Press any button to activate the LCD first!
3sec
00:00
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17 Fan Coil FC600 Instruction Manual
Press OK to conrm.
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2
06:00
Thermostat will go to program
2.
You will have to follow the same steps to set up all six programs, after which the thermostat will go to Sat-Sun
and will ask you to set the schedules for those days. You will have to set a start time and a temperature for
each of the six programs. If you are programming every day individually, you will have to set the programs
from 1- 6 for Monday, then Tuesday, Wed, Thu, Fri, Sat and Sun. If you are programming all week the same,
you will have to set all the 6 programs just once.
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1
06:00
Press OK to conrm.
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1
06:00
Press Up/Down arrows to set
the minutes.
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1
06:00
Press OK to conrm.
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1
06:00
Set a temperature for program
1 using Up/Down arrows.
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1
06:00
Press Up/Down arrows to set
the start time for program 1.
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1
Press Up/Down arrows to
choose the schedule mode.
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1
Press 1 time to select Sat-Sun
only.
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1
Press Up/Down to select each
day individually or 7 times to
select the whole week.
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1
Press OK to select .
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1
Press OK to choose Mon-Fri
Press OK button on this step if you want to
set a schedule for Mon-Fri. If you want to
choose another type of program, press Up/
Down arrow.
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1
06:00
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18 Fan Coil FC600 Instruction Manual
• During program setting, long press will save all settings and exit to home display.
• Program schedule time is a 10 minute step.
• If the selected days of week are 1-5+6-7, after you set the schedule for 1-5, the Fan Coil will automatically
go to programming 6-7.
• If you are programming whole week the same - after you finish programing schedule for days 1-7, the
Fan Coil will exit program setting mode.
• If the selected weekday is Monday, after the program setting is finished, the unit will automatically enter
program setting of Tuesday, then Wednesday, Thursday, Friday, Saturday and Sunday, finally exit the
program setting mode.
• Long press or is only to change fast time and temperature.
• At any time of setting, long press to return to the home display while saving your settings.
• The selected item will not flash if it is being adjusted. Flashing will resume about 0.5 seconds after key
release.
• The unit will return to home display after 30 seconds if no key is pressed, storing the program settings
which have been made. The unit will run as per the new program settings.
• The starting time of the next program cannot be equal or earlier than the previous one. For example in
the first program starts at 8:00, the next has to start at least 8:10 etc.
During program setting, few notes:
19 Fan Coil FC600 Instruction Manual
Frost Protection is a function that prevents pipes from freezing. Auto Frost Protection is always on and it is set
to 5⁰C. In Frost Protection all outputs are Off. Frost protection is active during the Standby mode as well.
2.9.1 Frost Protection
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Long Press to enter STANDBY/
Frost Protection Mode.
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Thermostat in STANDBY/Frost
Protection Mode.
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Temperature Offset is a feature that lets you adjust the room temperature reading +/- 3.0⁰C in 0.5 ⁰C steps.
This is handy if your thermostat is located in a spot with a slightly different temperature than the overall room
temperature. You can access the offset also by pressing the Mode button. Note: Press any button to activate
the LCD first!
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Press Mode Button for 3
seconds.
Program menu will be
displayed. Press Up arrow.
Clock menu will be displayed.
Press Up arrow.
Oset menu will be displayed.
Press OK.
Use Up/Down arrows to set an
oset range.
Use Up/Down arrows to set an
oset range.
Press OK to conrm and exist to
home screen.
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Home screen with new
oset temperature display.
2.9 Other Functions
2.8.3 Offset Function
3sec
3sec MMM
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20 Fan Coil FC600 Instruction Manual
2.9.4 Error Codes
Regardless the mode the Fan Coil is operating in - heating (including Frost Protection) or cooling mode, once
the external sensor is disconnected or malfunctioning, the thermostat shows alternately the warning letters
for 2 seconds and current temperature for 2 seconds to warn the user the external sensor is disconnected or
malfunctioning. At the same time, the LCD backlight will turn on when the warning letters are displayed, then
turn off when current temperature is displayed.
Error Code Description
01 Pipe sensor input is open or pipe sensor is not connected
02 Pipe sensor input short circuit
03 External sensor open or external sensor is not connected
04 External sensor short circuit
When the external sensor is reconnected or fixed, thermostat will return to Normal mode and display the
current room temperature.
When Err XX appears, the thermostat will be closed.
2.9.2 Key Lock Function
To lock the keys on the thermostat, please press the and together. LCD shows key lock icon . To
unlock the keys, press the same keys together again.
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Press together for 3 seconds.
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Keys locked.
2.9.3 Service Filter Reminder
The 'clean fan filter reminder' function counts the fan operating hours and displays the icon to remind the
user to clean the fan filter as soon as the threshold is reached. This does not impact the thermostat's operation,
which continues to run normally.
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Long press button for 5 seconds to cancel filter reminder.
3sec
3sec
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